Travel advisory

A travel advisory is a public notice issued by a government agency to provide information about the relative safety of traveling to or visiting one or more specific destinations. The purpose is to enable travelers make an informed decision about a particular travel destination, and to help them prepare adequately for what may be encountered on their trip.

Travel advisories may relate to issues such as inclement weather, security matters, civil unrest or disease.

The United States State Department web site has current information about U.S. and world travel requirements and recommended precautions. In addition, the U.S. Transportation Security Administration web site has useful information for those traveling by commercial airline, and tracks travel security measures imposed on air travelers.

From http://en.wikipedia.org/